concord a record low of 40. here's the weather system developing out here in the pacific. tomorrow partly to mostly cloudy skies. the clouds will be on the increase. this moves into the region producing rainfall. we haven't been talking about much rainfall this time of year. this is not an extreme rainfall producer. but the cold air moves in. that will drop our snow levels down to 2,500 feet possibly down to 2,000 feet. so we could have a bit of a dusting in the bay area hills. as we mentioned the clouds will start out the day for your monday. then they thicken up the cloud cover. this system tries to bring a few sprinkles. here's what happens first thing tuesday. the cold air sweeps into the region and we could have dropping snow levels down to 2,000 feet especially by tuesday afternoon and tuesday evening. bulk of the rainfall expected by mid-morning tuesday. as far as tomorrow we'll continue to cool things off mainly in the mid- to upper 50s. no more 70s. no more 50s. san jose a forecast high of 57. here's a look ahead, a five day forecast. it'll be a cool week ahead. y